Pulley-lathe



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M.G.HBNLBY. PULLEY LATHE. No. 506,398. Patented 0.01:. 10, 1898.

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(No Model.) 5 Sheets-She'et 2 M. C. HENLBY.

PULLEY LATHE'.

Patented oct. 1-0, 1893-. 17g. a.

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PULLBY LATES- Patented Oct. 10, 1893.

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M. C. HENLEY. PII-LLBY LATHE. No. v506,398.r Patented Oct. 10, 1893.

M. C. HBNLEY- i vPaten'Ql Oct. vv18.93.

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MICAJAH C. HENLEY, OF RICHMOND, INDIANA.

PU LLEY-LATH E.

SPECIFICATION forming part of Letters Patent No. 506,398, dated October 10, 1893.

Application filed June 10, 1893. Serial No. 477.210. (No model.)

` citizen of the United States, residing at Richmond, in the county of Wayne and State of Indiana, haveinvented certain new and useful Improvements in Pulley-Lathes, of which the following is a specification.

My invention relates to pulley lathes, and consists in various improvements upon the machine represented in Letters'Patent No. 446,448, issued to Henley and Shellenback.

In the drawings-#Figure lis a perspective View of myiinprpved machine; Fig. 2, an end elevation, partly in section; Fig. 3, a plan View, with various parts in section; Figs. 4, 5, 6, and '7, views illustrating in detail the construction of the gearing actuating and actuated by the extensible shaft; Figs. 8 and9, vertical sectional views, at right angles to each other, showing the gearing for imparting the proper feed to the saddle and tool post; Figs. 10 and ll, sectional views illustrating the construction of the tail stock and its arbor-actuating mechanism; and Fig. 12, a sectional view of a portion of the chuck.

A indicates the main frame of the machine, B the headstock and C the tail stock.

D indicates a shaft carrying the cone pulleys A', and the small pinion A2; and D' indicates the back shaft carrying a largegear B'which meshes with the pinion A2, as shown in the plan view.

Journaled in the end of the headstock isa short shaft C' carrying at its inner end a gear wheel C2, and at its outer end agear wheel C3 which engages and receives motion from the large gear B'. Below the shaft C' is a shaft D2 journaled in suitable bearings in theheadstock, and carrying near one end a gear wheel D3 to mesh with gear C2, and at the opposite end a large friction wheel or disk E,the said shaft D2 being capable of aslight longitudinal movement through the intervention of the rocking lever E', collar E2, and the screw E2. Under one end or arm of the lever E' is a spring E4 which tends to move the shaft toward the end of the machine, but such movement is of course limited or restricted by the screw E2.

Extending across `the machine from front to rear is a shaft F which is provided at each end with a worm F', and at a point between the ends with a small friction wheel F2 designed to engage the larger friction disk E. Wheel F2 is provided with a long splineor feather F4 having a collar F2, so that while the wheel F2 may be adjusted lengthwise of the shaft F, to vary the speed or rotation of the latter, it will always. rotate with the shaft, which latter is grooved to receive the spline.

Extending from thefront and rear faces of the main frame A are the shelves G and G' upon which are mounted respectively the rails H and H', said shelves being slotted as usual so as to receive the bolts which hold the rails in any desired position upon the shelves. In the plan view I have shown the rail H as extending transversely and the rail H' as eX- tending longitudinally of the machine. Under the present invention I provlde means whereby power may be transmit-ted to the v devices carried by these rails, regardless of their positions upon the shelves; and this part of the invention will now be described.

, Under the front of each apron is a shaft I carrying at one end a worm wheel J to be engaged bythe worm F', and at the opposlte end a'small bevel gear a, the said gear meshling with a double gear b mounted upon avertical shaft c. This shaftc is mounted in a frame or housingd secured to the front corner of the, shelf G. Encrcling or swiveled upon the shaft c is au open frame .or yoke e in which the end of ashaftfis `]ournaled, said shaft having at its inner end a bevel gear g to engage the double geant). As shown in the plan view, this shaft fis made telescopic or extensible so that it may be lengthened or shortened to conform to the posltlon of the rail upon the shelf. At the outerl en'd of shaft f is another yoke or frame h which 1s swiveled upon a vertical shaft t mounted on the side of the rail H; said shaftf having a l bevel gear 7' to engage a bevel gear k on thel -end a bevel gear m to engage gear 7c, and at its inner end a similar gear n which projects inward between two bevel gears o andp fixed upon a shaft q extending longitudinally of the rail, as shown in the plan view. This shaft q'is provided outside the rail with a pinion lr and within the railwith a grooved collar s which latteris adapted to receive the end of a shifting lever t by means of which the shaft may be moved lengthwise to bring either of the gears o or p into mesh withgear fn., or to bring them into a position where neither shall be in gear.

From the foregoing construction it will be seen that motion will be transmitted to the shaft Z in the rail, no matter what the position of the rail upon the shelf may bef-the eX-` tensible shaftf and the swiveled yokes e and h permitting a wide range of adjustment. Journaled lengthwise in the rail, above the shaft q, is a screw or screw shaft n. which carries at one end a pinion i; to engage the pinion fr on shaft q, and at the other end a handle y; said screw shaft engaging a nut w on the under side of the saddle K so that when the mechanism n, o, or o, p, is in gear, the saddle and attendant parts will receive alongitudinal power feed in one orthe other direction. Journaled in the rail parallel with shafts 'a and q is a spliced shaft or fashioned at one end to receive the pinion u which is uponA the shaft u. When this pinion is placed upon shaft or. and the gears n, 0, 19, thrown out of action, the screw shaft u may be turned by hand to effect the desired feed. This shaft passes through a bevel gear e', (held by a lug e on the saddle) which meshes with a similar gear d carriedat the lower end of an upright shaft b jonrnaled in the block or swing L, said shaft b carrying at its upper end a bevel gear c to engage an internally threaded bevel gear or gear nut d journaled in the rotatable swing L. Passing through the gear nut d is a screw shaft M which is mounted in the tool post N, from which it 'follows that when the shaft M is held against rotation by a clamping screwf, or otherwise, and the shaft n; is rotated, the tool post will begiven a longitudinal feed or movement. Vhen the tool post is swung around as indicated bythe dotted lines in the plan, this feed will be across feed or a feed at an angle to the' rail or to the saddle. Shaft M which is provided with a handle, may, after being released (so as to be capable' of turning) be turned or rotated within the gear nut and thereby effect the feed of the tool post by hand. In either case the bevel gear on shaft moves upon the shaft to which :it is keyed, as the saddle is moved back and forth.

WVhile I have described but one of the rails, tool posts, saddle, and the mechanism carried thereby, it is to be understood that the other, located on the opposite shelf G will be prov ided with similar mechanism for effecting proper feed of the saddle and tool post.

Mounted upon the arbor or spindle O is the pulley-holding chuck P, which comprises a circular main frame or body having on its front face clamping jaws g of any desired construction, and also on its edge the radially moving pins or shafts 7L. These pins h are slotted lengthwise to receive each a key z" mounted in the opening in the chuck through which they project so that the said pins may move lengthwise but not rotate. Pins h are threaded externally and pass through correspondingly threaded holes in the bevel gears or gear nuts Q journaled in the chuck body. Journaled in the body parallel with the arbor and with each other are shafts ,7" which carry at their outer ends bevel pinions la to mesh with bevel gear nuts Q, and at their inner ends the pinions l to engage the gear ring 'm2 swiveled upon the body of the chuck. This permits me to securely hold and center pulleys of a large size, but should it be found that a greater range of adj ustment is required, studs of a suitable length may be inserted into the outer ends of the screw pins L.

Jonrnaled in the main frame and extending from end to end, is a shaft R which pro jects outside the main frame at the headof the machine, where it is fashioned to receive either one of the two changeable gears S and T. When the larger of these gears is applied to the shaft R, it,-the said gear,will mesh with the double gear U carried bya lever V, which latter is hung or pivoted uipon the shaft D,-the said double gear receiving motion from the small pinion A2 with which it always remains in gear. This lever V is slotted to receive a clamping bolt m by means of which the lever is held in its adjusted positions. shaft R a slow motion the large gear S is applied to the shaft, and the said gearthrown into mesh with the double gear; but when it is desired to give the shaft a greater speed, wheel S is replaced by wheel T, and leVerfV is swung into such position that the double gearU (which remains in gear with pinion A2) shall engage and give motion to the said gear wheel T. At the tail of the machine the shaft R is grooved longitudinally and fitted to receivea gear wheel W which is embraced by arms or brackets n', n secured to the under side of the tailstock standard Xrthe said gear YV being provided with `a key or feather which prevents turning independeutly of the shaft, while allowing a sliding or longitudinal movement. This gear WV engages a smaller gear Y secured to a shaft Z journaled in the standard X, the construction and arrangement being such that these gears shall remain in mesh during the backward and forward travel of the standard upon or relatively to the main frame. Upon the standard X is mounted the tail stockGw-hich carries the boring arbor J which latter is not only threaded externally but is also slotted longitudinally. Upon this arbor are mounted the two gears K and L', one of which is provided with a threaded hub, while the other is provided with a keyor feather, substantially as in Patent No. 446,448, to Henley and Shellenback. Mounted upon shaft Z so as to slide thereon but to always rotate therewith, is a gear h which engages another gear N', which latter is carried by an arm or lever O hung or journaled on a sleeve secured to bracket O2 and concentric with shaft Z, so that when TCO IIO

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On that face of gear K' next to the gear L',

is a series of ratchet Ateeth o'pwhich are designed to be engaged by a pawl or springpressed pin p' carried bythe gear L',-and

thus cause the two gears K' and L'to turn or rotate the arbor withoutY effecting any longitudinal feed of the latter. The nose of. the pawl orpin is beveled so that the wheel L' may turn backward independently of K', the beveled nose of the pawl riding freely over the ratchet teeth. The pin or pawl is provided with a key which fits within a key-seat in the gear L', but which, when the pin is pulled outward and given a partial turn, will hold the said pin out of engagement with the ratchet teeth.

Parallel with the boring arbor, on the front side of the tail-stock, is a shaft P' which is provided with a hand wheel Q', and the fast and loose gears R' and S', which latter have opposing friction flanges or` rims q' and r', and are adapted to engage, respectively` the gears K' and L' on the boring arbor. Upon the end of shaft P', which is threaded, is placed a hand nut s', by turning whichin one direction the flange q' of wheel R will be caused to engage the corresponding flange r' of wheel S' and therebylock thetwo wheels together. The arbor J will be provided with a hole at its end to receive a boring vbar T', as in the Patent No. 446,448, referred to.

It is frequently desirable to hold the arbor J' ina given osition while facinnr off a hub or piece of work with a cutter on the bar T', or with a star-feed cutter made fast to the bar or arbor,the star-feed cutter being vsecured to the arbor for heavy work, and to the bar for light work. When, therefore, the pin p' is projected so as to engage the wheel K', and v motion is imparted to wheel L', through gears M', N', dac., the wheels K' and L' will turn together with the arbor J' until thefhub is faced, or one or more cuts made. When the gear nut K' turns to feed the arboi' forward, l the teeth on the said gear ride under and past the spring-pressed pin p', and by proportioning the number of ratchet teeth to the pitch of the thread on the arbor, the distance'the arbor is fed can be determined by noticing the number of clicks made by the passing of the teeth beneath the pin. This gear nut K' may be tiirnedrby hand, through shaft P' having hand wheel s' and fast gear R',-that is, when there is no frictional contact betweenV of the tail stock. The standard is moved.

upon the main frame by similar pinion U' engaging a rack V'.

f It is a matter of the utmost importance in a machine of this character rto have the boring arbor and main spindlein perfect line, and to insure this result, l provide means for securing 'a cross-line or front to rear adjustment of the head-stock relatively' to the main frame. On the under face of the head stock I form lugs 0c', one of which is threaded, and

through these lugsjI pass a shaft W' which is threaded where it passes through the threaded lug, and which bears at' opposite ends against thel inner faces of the main frame, so that by turning this screw shaft the headstock may be moved or adjusted as required. This construction may be reversed; that is, the lugs may be formed on the main frame, and the screw or screws arrangedto be carried by the headstock.

In order to adjust the main spindle or arbor boxes to compensate for wear, the lower faces of the boxes are beveled toward the cenboxes wear down most, because of the greater weight they have to sustain, but under 'my construction the boxes maybe independently adjusted to compensate for this inequality.

Havingthus described my invention, what 1.*In a pulley lathe, the combination with the main frame and the headstock; of the arbor or spindle; boxes orbearings supporting opposite ends of the arbor, said` boxes being beveled toward the axis of the shaft, on their underside; lwedge-nuts supportingthe lOO respectivepboxes or bearings; and independent right-and-left screws jouinaled inthe headstock and engaging the wedge nuts,

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whereby the arbor may be adjusted ina vertical plane, at each end-independently.

' 2. Ina pulley lathe, the combination with the main frame; of the headstock mounted thereon and provided with two lugs, one ofwhich is threaded; and a shaft threaded to engage one ofthe lugs and bearing at its ends against the main frame.

3. In a pulley lathe, the combination with the tail stock and the rotatable tool-arbor joiirnaled therein; of a shaft, and intermediate mechanism for imparting motion to the arbor; and a changeable speed gear, interposed between the shaft and its driving mechf anism.

4. In a pulley lathe, the combination with the tail'stock and the boring arbor mounted therein; of a shaft and intermediate connections forimparting motion to the arbor; and the gear wheels K' and L' forming elements of such intermediate connections, and providedwith the pawl and `ratchet connection 5. In a pulley lathe, the combination with the tail stock and the arbor mounted therein; of the gear nut K and gear L for imparting motion to the arbor; the back shaft P provided with fast and loose gears R', S', to engage the wheels K' and L; devices independent of the fast and loose gears for imparting motion to the gears K and L; and means for connecting and disconnecting the gears R and S.

G. In a pulley lathe, the combination with the main frame and the shaftR journaled therein; of the tail stock standard; the tail stock and its arbor; a shaft journaled in the standard and provided with a gear to engage a gear having a sliding connection with the shaft R; a gear mounted upon the standards shaft and having a sliding connection therewith; and intermediate connections between said gear and the arbor.

7. In a pulley lathe, the combination with the arbor, of the chuck mounted thereon, said chuck comprising a body encircled by a gear ring m; a series "of shafts j provided at one end with a pinion l and at the opposite end with a bevel gear c; the bevel gear nuts Q mounted in the chuck frame; and screws h mounted in the nuts and adapted to be projeeted beyond ille periphery of the chuck body.

8. In a pulley lathe, the combination with the shaft D2 and its friction disk; of the shaft F and its friction Wheel F2; means for im parting motion to the shaft D2; the rocking lever E engaging shaft D2 to move it lengthwise; a spring E4 acting upon one arm of the lever E; and a screw E3 acting upon the other arm in opposition to the spring.

9. In a pulley lathe, the combination with the main frame having the stationary shelf or bracket G; of a rail I-I adjustably mounted thereon and adapted to be rigidly afxed in position; a tool-carrying mechanism adjustably mounted upon the rail; suitable workholding devices; a main driving shaft D; and

intermediate flexible connections for actuating the tool-carrying mechanism,said toolcarrying mechanism being capable of inde` pendent or conjoint action, at will, with the Work holder.

. 10. In a pulley lathe, the combination with the main frame having the shelf or bracket G; of a shaft I along the front edge of the shelf; means for imparting motion to the sodass shaft; a rail H mounted upon the shelf and adapted to be secured thereto in different positions; tool-supporting devices adjustable upon the rail; and an extensible shaftfand suitable connecting mechanism forimparting motion from the shaft I to the tool-support ing devices.

l1. In combination With the rail I-I and the sliding shaft q therein; a shaft l at an angle to shaft q and provided with a gear n adapted to engage either of the gears 0 or p upon the shaft q; a pinion r on the shaft q; a screw shaft u also journaled in the rail and provided with a pinion@ to engage the pinion r; and a saddle having a threaded lug or nut w to receive the screw shaft.

12. In combination with the rail, the saddle, the block or swing, and the tool post; the shaft q, provided with a gear o', and adapted to be actuated by power; a screw shaft/wengaging a nut on the saddle and provided with a removable gear c to mesh with gearr; a shaft x having its end fashioned to receive the gear QJ, and intermediate connectionsbetween the shaft m and the tool post; whereby thepower feed may be transmitted to the sad.- dle or to the tool post at will.

13. yIn combination with the rail, saddle,and tool post, a gear nut d journaled in the saddle, a power mechanism for rotating the nut, means for throwing said mechanism into and out of action; a screw shaft M swiveled inthe tooll post; and clamping devices for the screw; whereby the tool post may be adjusted by hand or by power as desired.

14. In a pulleylathe, the combination with the main frame having the horizontal shelves G G on opposite sides thereof; of a shaft I along the front edge of each shelf; means for imparting motion to these shafts; independently adjustable rails I-I II mounted uponthe shelves and adapted to be secured thereto; tool-supporting devices adjustable upon each of the rails; and an extensible shaft fand suitable connecting mechanism for imparting motion from the shaft I to the toolsupport` ing devices.

In witness whereof Ihereunto set my hand in the presence of two witnesses.

MICAJAI-I C. HENLEY.

Witnesses: W. T. DENNIS, WEBSTER PARRY. 

